The Random House Dictionary says that: "The term Canuck is first recorded about 1835 as an Americanism, originally referring specifically to a French Canadian. This was probably the original meaning, though in Canada and other countries, Canuck now more often refers to any Canadian." [1]

In 1975 in comics by Richard Comely, Captain Canuck is a super-agent for Canadians' security, with Redcoat and Kebec being his sidekicks. (Kebec is claimed to be unrelated to Capitaine Kébec of a French-Canadian comic published two years earlier.) Captain Canuck had enhanced strength and endurance thanks to being bathed in alien rays during a camping trip. The captain was reintroduced in the mid-1990s, and again in 2004.

The use of "Canuck" is similar to the use of some other potentially offensive nicknames. When it is used by the people it names – Canadians in this case – it is usually acceptable. But when it is used by an outsider it can be thought of as insulting one's heritage.